For me, QE2 just confirms that I should keep on doing what I'm doing: COMMODITIES. I'm not buying them directly, but I'm buying stocks at the beginning of commodity supply chains (miners).
I like to buy junior mining companies on the OTC with huge (confirmed) underground assets, sound management, good share structure, and strong potential of a JV contract with a big mining company. That's how the big miners you see on the NASDAQ and NYSE got their start: they staked a claim and proved up a big deposit of what have you, then obtained a JV with a big company to finance getting it out of the ground. Then they snowball, bigger and bigger. Miners are made by standing on the shoulders of giants.
I'm not in love with all commodities, though. I like precious & industrial metals, REEs, and agriculturals. Specifically:
Gold
Silver
Copper
Niobium
Molybdenum
Uranium
Potash
There's also money to be made in oil drillers, but I haven't DD'd it yet.
Obviously, I'm not a trader, but an investor. This part of my portfolio represents my risk money, I'm focused on building it before I do anything else in the market. I might consider trading sometime, but Warren Buffett didn't build his fortune by jumping in and out of stocks and paying ridiculous short-term capital gains taxes.